What are the challenges in bonding WPC components with metal or ceramic fittings in modular planter designs?

Bonding Wood-Plastic Composite (WPC) components with metal or ceramic fittings in modular planter designs presents several challenges. One major issue is material compatibility, as WPC has different thermal expansion rates compared to metals or ceramics, leading to potential stress cracks or bond failure over time. Adhesion is another concern, as WPC's smooth surface and low porosity make it difficult for adhesives to form a strong bond. Additionally, environmental factors like moisture and temperature fluctuations can weaken the bond. Durability is also a challenge, as the joint must withstand mechanical stress and weathering. Finally, aesthetic mismatches between materials can affect the overall design appeal. Addressing these challenges requires careful selection of adhesives, surface treatments, and design adaptations.